1.5V-3V Mechanical Buzzer (Bare Metal Leads)

Works as expected

Buzzers work as expected. I’m estimating the pitch to be about 470 Hz, which is really more of a beep than a buzz, but it’s not ear-piercing. Volume seems okay; it’s startling when you’re not expecting it, but otherwise tolerable, not damaging. Note that the description says this is for the Operation game, and while it will work for that, it won’t make the same sound, at least not as the traditional game, because the traditional game made that low honking rattle by vibrating a motor against the board. It’s just a completely different mechanism that’s hard to duplicate in any other way. But this will do the job.